:root {
    --datap-dark: #2D0835;
    --datap-purple: #6c226d;
    --datap-red: #DF124E;
    --datap-light-dark: #57395D;
    
    --bg-color: var(--datap-dark);
    --bg-alt-color: #3a1b47;
    --text-color: #F0F0F0;
    --heading-color: #F0F0F0;
    --header-bg: var(--card-border);
    --header-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
    --card-bg: #57395D;
    --card-border: rgba(152, 47, 153, 0.3);
    --card-hover: #982F99;
    --btn-bg: #FFFFFF;
    --btn-text: var(--datap-purple);
    --btn-accent: #F0F0F0;
}

[data-theme="light"] {
    --bg-color: #f6f5f8;
    --bg-alt-color: #e5e0ea;
    --text-color: #333333;
    --heading-color: var(--datap-dark);
    --header-bg: var(--bg-color);
    --header-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    --card-bg: #FFFFFF;
    --card-border: rgba(0, 0, 0, 0.08);
    --card-hover: #F8F7FA;
    --btn-bg: var(--datap-purple);
    --btn-text: #FFFFFF;
    --btn-accent: #DF124E;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}


body {
    font-family: 'Figtree', sans-serif;
    background-color: var(--bg-color);
    background-image: radial-gradient(var(--card-border) 1.5px, transparent 1.5px);
    background-size: 20px 20px;
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}


.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--header-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.placeholder-logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--datap-red), var(--datap-purple));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    font-size: 1.5rem;
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--heading-color);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.control-btn {
    background: transparent;
    border: 2px solid var(--btn-accent);
    color: var(--btn-accent);
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Figtree', sans-serif;
    font-weight: 600;
    width: 40px;
    height: 40px;
}

.control-btn:hover {
    background: var(--card-bg);
}

.login-btn {
    background: var(--btn-bg);
    color: var(--btn-text);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Figtree', sans-serif;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.login-btn:hover {
    filter: brightness(1.1);
}

.hero-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4rem 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--heading-color);
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--datap-red), var(--datap-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    opacity: 0.9;
    text-align: center;
    margin-bottom: 4rem;
    max-width: 600px;
}

.tiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    width: 100%;
}

@media (min-width: 1000px) {
    .tiles-grid {
        grid-template-columns: repeat(3, 300px);
        justify-content: center;
    }
}

.tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    text-align: center;
    text-decoration: none;
    color: var(--text-color);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem 1.25rem;
    width: 300px;
    height: 300px;
    margin: 0 auto;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}


.tile.disabled {
    pointer-events: none;
    opacity: 0.5;
    filter: grayscale(100%);
}

.tile:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    background-color: var(--card-hover);
    border-color: var(--datap-purple);
}

.tile-icon {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(223, 18, 78, 0.1), rgba(152, 47, 153, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--datap-purple);
}

[data-theme="dark"] .tile-icon {
    background: rgba(0,0,0,0.2);
    color: #e0a6e1;
}

.tile h3 {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-bottom: 1rem;
    color: var(--heading-color);
}

.tile p {
    font-size: 0.95rem;
    opacity: 0.8;
    line-height: 1.5;
}